S70 O-Ring Identification

[OberonXIV]

Hello Folks,

After getting my ‘99 S70 up and running, I finally moved her out of the garage and found this O-Ring on the floor! I recently replaced my heater hoses and coupler o-rings. The things I pulled from the car during this project are:
- Airbox and intake
- Lower radiator hose
- Both heater hoses and copper fittings
- Heater core coupler
- Gas pedal
- Hardlines to heater core
- Heater core itself

Attached is a photo of the o-ring. It measures an inch and a half across. I perused ipd and FCPEuro for matching size O-Rings but it’s been eluding me.

[abscate]

That’s a big oring the only one I can think of is the oil pan oring which is nothing near where you worked.

Hmmmm